condition mean min max ZT0-3 10.30088268425 9.769954237 10.8318111315 ZT4-7 17.675710685 14.610042285 20.741379085 ZT8-11 18.209478235 16.899528450000002 19.51942802 ZT12-15 17.5912504725 15.79685152 19.385649425 ZT16-19 26.446269915000002 20.085281665 32.807258165 ZT20-23 52.088447647500004 42.24373561 61.933159685